Shingles vaccine may reduce dementia, heart disease risk by 50%

• Adults ages 50 and older can shield themselves in opposition to shingles with a vaccine.
• Earlier analysis has proven that the shingles vaccine might assist decrease an individual’s danger for dementia and coronary heart illness.
• A brand new examine discovered that the shingles vaccine might assist decrease an individual’s danger for vascular dementia and cardiovascular occasions like blood clots, coronary heart assault, and stroke.

Since 2006, older adults have been capable of shield themselves from shingles by getting the shingles vaccine. The U.S. Facilities for Illness Management & Prevention (CDC) recommends adults ages 50 and over obtain two doses of the shingles vaccine.

Earlier analysis has proven that the shingles vaccine might provide extra well being advantages. For instance, a examine printed in Could 2025 discovered that the shingles vaccine might assist decrease an individual’s danger for cardiovascular occasions by 23%. And analysis printed in April 2025 reported that the shingles vaccine might assist scale back an individual’s dementia danger by as much as 20%.

For this examine, researchers analyzed the medical knowledge for greater than 38,000 folks within the U.S. with a median age of 69. Members who acquired the shingles vaccine had been adopted for a median of three.6 years, and people who didn’t obtain the vaccine had been adopted for a median of three.9 years.

“Vaccines don’t simply stop an infection — they will additionally form how the physique responds to irritation,” Ali Dehghani, DO, physician of inside drugs at Case Western Reserve College and College Hospitals Cleveland Medical Middle, and presenting creator of this examine at IDWeek 2025, instructed Medical Information Right now. “Herpes zoster (shingles) is now acknowledged as a situation that may have an effect on the guts, blood vessels, and mind lengthy after the rash is gone.”

“Understanding how the shingles vaccine would possibly scale back these broader issues helps us respect vaccines as instruments for general well being safety, not only for stopping one illness,” Dehghani added.

On the examine’s conclusion, researchers discovered that when evaluating the shingles vaccine to the pneumococcal vaccine for the prevention of pneumonia, individuals who acquired the shingles vaccine lowered their danger for vascular dementia by 50%.

Moreover, those self same shingles-vaccinated individuals had a 27% danger discount for blood clots, a 25% decrease danger of coronary heart and stroke, and a 21% decrease loss of life danger.

“We’ve discovered from previous research that shingles can improve the chance of coronary heart assault, stroke, and dementia, however nobody had but requested whether or not being vaccinated earlier than getting shingles might reduce these long-term dangers,” Dehghani stated. “Our purpose was to check whether or not vaccination may not solely stop shingles itself, but in addition blunt the irritation that drives vascular and cognitive harm afterward.”

How: Lowering general irritation

“These numbers recommend the vaccine’s advantages might lengthen far past stopping shingles. We predict the shingles vaccine might assist the immune system management the virus earlier than it causes widespread irritation, which in flip might shield blood vessels and the mind. It highlights how lowering irritation early — by vaccination — can have lasting results on coronary heart, mind, and general survival.”
— Ali Dehghani, DO

“Our subsequent steps are to check how shingles-related irritation impacts blood vessels and the mind in sufferers with medical circumstances that predispose them to elevated Zoster susceptibility,” Dehghani added. “We’re additionally exploring whether or not different vaccines that scale back viral irritation present related long-term coronary heart and mind advantages.”

MNT spoke with Manisha Parulekar, MD, FACP, AGSF, CMD, director of the Division of Geriatrics at Hackensack College Medical Middle and co-director of the Middle for Reminiscence Loss and Mind Well being at Hackensack College Medical Middle in New Jersey, concerning the shingles vaccine and its potential for reducing vascular dementia danger.

“As a geriatrician who works every day with sufferers and households affected by dementia, my first response was one among cautious optimism,” Parulekar stated. “This examine reinforces a concept we now have been exploring that irritation within the nervous system is a key driver of cognitive decline. For sufferers who typically really feel helpless in opposition to this illness, the potential advantage of a routine vaccination might provide a degree of safety (that) is encouraging.”

“This analysis suggests the shingles vaccine might do extra than simply stop a painful rash; it could additionally scale back irritation within the nervous system. If we will verify this hyperlink, it opens up a promising new avenue for prevention, not only for dementia however doubtlessly for different neurodegenerative ailments which are additionally linked to irritation.”
— Manisha Parulekar, MD, FACP, AGSF, CMD

Though it’s far too early to say whether or not the varicella-zoster virus instantly causes dementia, extra analysis might clarify the hyperlink.

“It will be useful to develop this analysis from correlation to causation, to definitively verify if lowering the reactivation of the varicella-zoster virus is what really lowers dementia danger. Exploring why the impact was stronger in girls might present essential insights into the alternative ways this illness progresses in various populations,” Parulekar stated.

MNT additionally spoke with Cheng-Han Chen, MD, a board licensed interventional heart specialist and medical director of the Structural Coronary heart Program at MemorialCare Saddleback Medical Middle in Laguna Hills, CA, concerning the examine’s findings concerning the shingles vaccine and lowered heart problems dangers, together with blood clots, coronary heart assault, and stroke.

“This examine discovered an affiliation between getting the shingles vaccine and a lowered future danger of coronary heart assault, stroke, dementia, and even loss of life,” Chen stated. “These outcomes are according to earlier research, which have additionally discovered a cardio-protective and neuro-protective impact of the shingles vaccine.”

How shingles might result in different ailments

“Severe infections reminiscent of shingles can incite a powerful and irritating inflammatory response within the physique. This, in flip, might result in main antagonistic well being results in many alternative organ programs. By higher understanding the well being advantages of the shingles vaccine, we might even have the ability to develop the classes of sufferers who we expect would profit from vaccination.”
— Cheng-Han Chen, MD

“Future analysis can concentrate on the potential mechanisms behind how the shingles vaccine might even have a causative protecting impact in opposition to heart problems,” Chen added.